Pub Date : 2017-05-01DOI: 10.1109/GSMM.2017.7970312
Chao Ma, S. Qu, Shiwen Yang
In this paper, a design that utilizes subreflectarrays for ring-focus reflector antenna is proposed. A 0.3 m parabolic reflector which operates at 23 GHz is chosen as a main reflector in ring-focus reflector antenna, and a 50 mm diameter circular array consists of 68 elements is designed to emulate a metal subreflector, using a method presented in this paper. Simulation rerults of the reflector demonstrate a good availability of the presented design about utilizing reflectarrays as subreflector for ring-focus reflector antenna.
{"title":"Subreflectarrays for ring-focus reflector antenna","authors":"Chao Ma, S. Qu, Shiwen Yang","doi":"10.1109/GSMM.2017.7970312","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970312","url":null,"abstract":"In this paper, a design that utilizes subreflectarrays for ring-focus reflector antenna is proposed. A 0.3 m parabolic reflector which operates at 23 GHz is chosen as a main reflector in ring-focus reflector antenna, and a 50 mm diameter circular array consists of 68 elements is designed to emulate a metal subreflector, using a method presented in this paper. Simulation rerults of the reflector demonstrate a good availability of the presented design about utilizing reflectarrays as subreflector for ring-focus reflector antenna.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126636477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-05-01DOI: 10.1109/GSMM.2017.7970287
C. Renaud
As THz and millimetre wave technologies are further developing for a range of applications, photonics is one of the key technology for its development. We will discuss the different recent advances in photonic technologies for THz and millimetre wave. In particular we will look at integration technologies and their potential for reduced foot print and lower power consumption. We will although look at the comparative progress of electronic based solutions and discuss the future outlook of both technologies.
{"title":"Keynote speech 1: Progress in THz technology enabled by photonics","authors":"C. Renaud","doi":"10.1109/GSMM.2017.7970287","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970287","url":null,"abstract":"As THz and millimetre wave technologies are further developing for a range of applications, photonics is one of the key technology for its development. We will discuss the different recent advances in photonic technologies for THz and millimetre wave. In particular we will look at integration technologies and their potential for reduced foot print and lower power consumption. We will although look at the comparative progress of electronic based solutions and discuss the future outlook of both technologies.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121481611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-05-01DOI: 10.1109/GSMM.2017.7970337
Y. J. Cheng, F. Xue
In this paper, a modified substrate integrated waveguide (SIW) Rotman lens is proposed to feed several SIW slot array antennas in order to generate multiple focal points. This modified SIW Rotman lens, as a focused beamforming network (BFN), consists of eleven input beam ports and fifteen output array ports. Its phase shifting network is modified to satisfy the requirements of beam focusing and scanning. The focal point of the integrated multibeam antenna can be changed when it is excited at different input port.
{"title":"Substrate integrated focused multibeam antenna based on the modified Rotman lens","authors":"Y. J. Cheng, F. Xue","doi":"10.1109/GSMM.2017.7970337","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970337","url":null,"abstract":"In this paper, a modified substrate integrated waveguide (SIW) Rotman lens is proposed to feed several SIW slot array antennas in order to generate multiple focal points. This modified SIW Rotman lens, as a focused beamforming network (BFN), consists of eleven input beam ports and fifteen output array ports. Its phase shifting network is modified to satisfy the requirements of beam focusing and scanning. The focal point of the integrated multibeam antenna can be changed when it is excited at different input port.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128326224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-05-01DOI: 10.1109/GSMM.2017.7970282
Changrong Liu, Jun Wang, Xinmi Yang, Xueguan Liu
Optimal operating frequency is studied in this paper to enhance the wireless link efficiency. Frequency effect is analyzed for far-field wireless power transmission. The electrical properties of human muscle is studied to calculate attenuation constant of human tissue and field reflection loss at muscle-to-air interface. The gain of an implantable antenna is estimated after assuming incident plane-wave propagation. Safety considerations are fully considered to establish equivalent isotropic radiated power of external device. The received power is calculated by indoor line-of-sight propagation model. Thus the optimal frequency can be achieved by the maximum received power versus frequency.
{"title":"Frequency optimization of an implantable antenna for far-field wireless power transmission","authors":"Changrong Liu, Jun Wang, Xinmi Yang, Xueguan Liu","doi":"10.1109/GSMM.2017.7970282","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970282","url":null,"abstract":"Optimal operating frequency is studied in this paper to enhance the wireless link efficiency. Frequency effect is analyzed for far-field wireless power transmission. The electrical properties of human muscle is studied to calculate attenuation constant of human tissue and field reflection loss at muscle-to-air interface. The gain of an implantable antenna is estimated after assuming incident plane-wave propagation. Safety considerations are fully considered to establish equivalent isotropic radiated power of external device. The received power is calculated by indoor line-of-sight propagation model. Thus the optimal frequency can be achieved by the maximum received power versus frequency.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115493511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-05-01DOI: 10.1109/GSMM.2017.7970298
Qi Cai, W. Che, Kaixue Ma
A compact transistor based analog predistorter (APD) using a slow-wave coupler is proposed. Compared with previously published work in [7], 72% size reduction is realized for the proposed slow-wave coupler, while 49.1% size reduction is achieved for the total APD. One prototype is designed and fabricated for verification. The simulated results of the APD show the insertion loss of 0.5 dB at 2.4 GHz with a return loss of −8.4 dB and −14.5 dB at the input and output port, respectively. Under large signal simulation, the proposed APD shows a maximum gain enhancement of 2 dB at the input power of 26 dBm, which perfectly compensates the gain compression of the main PA at this power level. The simulated output 1dB gain compression point (P1dB) of the main PA is increased from 36 dBm to 40 dBm under CW signal with the proposed APD.
{"title":"A compact transistor based analog predistorter using a slow wave coupler","authors":"Qi Cai, W. Che, Kaixue Ma","doi":"10.1109/GSMM.2017.7970298","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970298","url":null,"abstract":"A compact transistor based analog predistorter (APD) using a slow-wave coupler is proposed. Compared with previously published work in [7], 72% size reduction is realized for the proposed slow-wave coupler, while 49.1% size reduction is achieved for the total APD. One prototype is designed and fabricated for verification. The simulated results of the APD show the insertion loss of 0.5 dB at 2.4 GHz with a return loss of −8.4 dB and −14.5 dB at the input and output port, respectively. Under large signal simulation, the proposed APD shows a maximum gain enhancement of 2 dB at the input power of 26 dBm, which perfectly compensates the gain compression of the main PA at this power level. The simulated output 1dB gain compression point (P1dB) of the main PA is increased from 36 dBm to 40 dBm under CW signal with the proposed APD.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"49 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116554325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-05-01DOI: 10.1109/GSMM.2017.7970313
Y. Zhang
This paper first summarizes the research and development of microstrip grid array antennas for millimeterwave radio and radar applications over the recent years. Then the paper describes multiport microstrip grid array antennas to explore their use in multi-input and multi-output (MIMO) systems. Particular emphasis is given to the multiport excitation and isolation performances.
{"title":"Multiport microstrip grid array antenna","authors":"Y. Zhang","doi":"10.1109/GSMM.2017.7970313","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970313","url":null,"abstract":"This paper first summarizes the research and development of microstrip grid array antennas for millimeterwave radio and radar applications over the recent years. Then the paper describes multiport microstrip grid array antennas to explore their use in multi-input and multi-output (MIMO) systems. Particular emphasis is given to the multiport excitation and isolation performances.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116578365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-05-01DOI: 10.1109/GSMM.2017.7970311
Peng-Yu Feng, S. Qu, Shiwen Yang
The high profile of the space-fed antennas is the main restriction for practical applications. Traditional design method to pursue high compactness of this kind of antenna is to decrease the focus-to-diameter ratio (F/D), but suffers from performance degradation. To address this issue, a small dipole array is chosen as the feed in our design. By employing conjugate field matching (CFM) technology, the small feed array can effectively excite the transmitarray with a significant reduction of the profile. Compared to an identical transmitarray excited by a traditional horn, although 0.33 dB gain drop is suffered, the profile of the whole antenna is reduced by almost two thirds. Finally, the simulated results of the presented model confirm the feasibility of designing a low-profile dipole array feed transmitarray.
{"title":"Low-profile dipole array fed transmitarray","authors":"Peng-Yu Feng, S. Qu, Shiwen Yang","doi":"10.1109/GSMM.2017.7970311","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970311","url":null,"abstract":"The high profile of the space-fed antennas is the main restriction for practical applications. Traditional design method to pursue high compactness of this kind of antenna is to decrease the focus-to-diameter ratio (F/D), but suffers from performance degradation. To address this issue, a small dipole array is chosen as the feed in our design. By employing conjugate field matching (CFM) technology, the small feed array can effectively excite the transmitarray with a significant reduction of the profile. Compared to an identical transmitarray excited by a traditional horn, although 0.33 dB gain drop is suffered, the profile of the whole antenna is reduced by almost two thirds. Finally, the simulated results of the presented model confirm the feasibility of designing a low-profile dipole array feed transmitarray.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127789952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-05-01DOI: 10.1109/GSMM.2017.7970300
Jose M. Pérez, I. Ederra, R. Gonzalo
In this paper, a very wide bandwidth frequency tripler and fourth harmonic mixer for a wireless communication link at 300 GHz have been designed. An anti-parallel configuraticn of Schottky diodes has been used for both devices. The fourth harmonic mixing configuration is a good solution when it is difficult to have enough Local Oscillator (LO) power to pump the diodes whereas frequency increases. Conversion Loss (CL) of the tripler is around 15 dB for 65 GHz bandwidth in which the best value is 12 dB for 318 GHz. For the fourth harmonic mixer, the CL obtained is around 18 dB within 41 GHz bandwidth. The best value is 10.2 dB for 301 GHz.
{"title":"Development of electronic subsystems for a terahertz wireless link","authors":"Jose M. Pérez, I. Ederra, R. Gonzalo","doi":"10.1109/GSMM.2017.7970300","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970300","url":null,"abstract":"In this paper, a very wide bandwidth frequency tripler and fourth harmonic mixer for a wireless communication link at 300 GHz have been designed. An anti-parallel configuraticn of Schottky diodes has been used for both devices. The fourth harmonic mixing configuration is a good solution when it is difficult to have enough Local Oscillator (LO) power to pump the diodes whereas frequency increases. Conversion Loss (CL) of the tripler is around 15 dB for 65 GHz bandwidth in which the best value is 12 dB for 318 GHz. For the fourth harmonic mixer, the CL obtained is around 18 dB within 41 GHz bandwidth. The best value is 10.2 dB for 301 GHz.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115212333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/GSMM.2017.7970303
R. Arya, Shiyu Zhang, Y. Vardaxoglou, W. Whittow, R. Mittra
In this work, we present a flat lens design using the Dial-a-Dielectric (DaD) and 3D-printing technique to realize the materials that are not available off-the-shelf. We design the proposed flat lens and compare its performance with that of the ray-optics (RO)-based lens. We find from the results that both designs show comparable performance.
{"title":"3D-printed millimeter wave lens antenna","authors":"R. Arya, Shiyu Zhang, Y. Vardaxoglou, W. Whittow, R. Mittra","doi":"10.1109/GSMM.2017.7970303","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970303","url":null,"abstract":"In this work, we present a flat lens design using the Dial-a-Dielectric (DaD) and 3D-printing technique to realize the materials that are not available off-the-shelf. We design the proposed flat lens and compare its performance with that of the ray-optics (RO)-based lens. We find from the results that both designs show comparable performance.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"341 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134077143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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